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Cheap flights from South Dakota to Idaho Falls from $493

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from South Dakota to Idaho Falls departing on 8/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from South Dakota to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:00 am - 9:53 am
RAP
-
IDA
4h 53m
1 stop
United Airlines Logo
4:10 pm - 10:23 pm
IDA
-
RAP
6h 13m
1 stop
$493United Airlines
Sat, Aug 29 - Wed, Sep 2
United Airlines Logo
5:00 am - 9:53 am
RAP
-
IDA
4h 53m
1 stop
United Airlines Logo
5:53 pm - 9:17 am
IDA
-
RAP
15h 24m
1 stop
$503United Airlines
Sat, Aug 29 - Wed, Sep 2
United Airlines Logo
5:27 am - 9:53 am
RAP
-
IDA
4h 26m
1 stop
United Airlines Logo
2:30 pm - 8:44 pm
IDA
-
RAP
6h 14m
1 stop
$509United Airlines
Fri, Apr 10 - Tue, Apr 14
United Airlines Logo
10:00 am - 3:39 pm
RAP
-
IDA
5h 39m
1 stop
United Airlines Logo
5:20 pm - 6:00 pm
IDA
-
RAP
24h 40m
1 stop
$553United Airlines
Mon, Apr 13 - Fri, Apr 17
United Airlines Logo
5:00 am - 9:53 am
RAP
-
IDA
4h 53m
1 stop
United Airlines Logo
4:10 pm - 10:12 am
IDA
-
RAP
18h 02m
2 stops
$603United Airlines
Sat, Aug 29 - Wed, Sep 2
United Airlines Logo
5:00 am - 9:53 am
RAP
-
IDA
4h 53m
1 stop
United Airlines Logo
4:10 pm - 10:12 am
IDA
-
RAP
18h 02m
2 stops
$618United Airlines
Sat, Aug 29 - Wed, Sep 2
United Airlines Logo
5:27 am - 9:53 am
RAP
-
IDA
4h 26m
1 stop
United Airlines Logo
5:20 pm - 9:41 pm
IDA
-
RAP
28h 21m
2 stops
$673United Airlines
Fri, Apr 10 - Tue, Apr 14
United Airlines Logo
11:40 am - 9:04 pm
RAP
-
IDA
33h 24m
3 stops
United Airlines Logo
5:20 pm - 10:28 pm
IDA
-
RAP
5h 08m
1 stop
$719United Airlines
Fri, Apr 10 - Tue, Apr 14
United Airlines Logo
10:00 am - 3:39 pm
RAP
-
IDA
5h 39m
1 stop
United Airlines Logo
5:20 pm - 10:36 am
IDA
-
RAP
41h 16m
2 stops
$742United Airlines
Mon, Apr 13 - Fri, Apr 17
United Airlines Logo
6:00 am - 3:29 pm
RAP
-
IDA
9h 29m
2 stops
United Airlines Logo
4:10 pm - 10:23 pm
IDA
-
RAP
6h 13m
1 stop
$869United Airlines
Sat, Aug 29 - Wed, Sep 2

United Airlines flights from South Dakota to Idaho Falls

Our best United Airlines deals on South Dakota to Idaho Falls flight tickets
United Airlines
Aug 29
RAP5:00 amRapid City
4h 53m
1 stop
IDA9:53 amIdaho Falls Fanning Field
Sep 2
IDA4:10 pmIdaho Falls Fanning Field
6h 13m
1 stop
RAP10:23 pmRapid City
$493
United Airlines
Aug 29
RAP5:00 amRapid City
4h 53m
1 stop
IDA9:53 amIdaho Falls Fanning Field
Sep 2
IDA5:53 pmIdaho Falls Fanning Field
15h 24m
1 stop
RAP9:17 amRapid City
$503
United Airlines
Apr 10
RAP5:27 amRapid City
4h 26m
1 stop
IDA9:53 amIdaho Falls Fanning Field
Apr 14
IDA2:30 pmIdaho Falls Fanning Field
6h 14m
1 stop
RAP8:44 pmRapid City
$509

momondo Fare Finder

 
Customize your flight search to find flights from South Dakota to Idaho Falls that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 31, 2026.
Use the filters below to find and compare flights from South Dakota to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sat 8/29

5:00 am-9:53 am

1 stop4h 53m

Idaho Falls Fanning Field

Wed 9/2

4:10 pm-10:23 pm

1 stop6h 13m

$493

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sat 8/29

5:00 am-9:53 am

1 stop4h 53m

Idaho Falls Fanning Field

Wed 9/2

5:53 pm-9:17 am

1 stop15h 24m

$503
Quickest round-trip

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Fri 4/10

5:27 am-9:53 am

1 stop4h 26m

Idaho Falls Fanning Field

Tue 4/14

2:30 pm-8:44 pm

1 stop6h 14m

$509

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 4/13

10:00 am-3:39 pm

1 stop5h 39m

Idaho Falls Fanning Field

Fri 4/17

5:20 pm-6:00 pm

1 stop24h 40m

$553

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sat 8/29

5:00 am-9:53 am

1 stop4h 53m

Idaho Falls Fanning Field

Wed 9/2

4:10 pm-10:12 am

2 stops18h 02m

$603

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sat 8/29

5:00 am-9:53 am

1 stop4h 53m

Idaho Falls Fanning Field

Wed 9/2

4:10 pm-10:12 am

2 stops18h 02m

$618

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Fri 4/10

5:27 am-9:53 am

1 stop4h 26m

Idaho Falls Fanning Field

Tue 4/14

5:20 pm-9:41 pm

2 stops28h 21m

$673

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Fri 4/10

11:40 am-9:04 pm

3 stops33h 24m

Idaho Falls Fanning Field

Tue 4/14

5:20 pm-10:28 pm

1 stop5h 08m

$719

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 4/13

10:00 am-3:39 pm

1 stop5h 39m

Idaho Falls Fanning Field

Fri 4/17

5:20 pm-10:36 am

2 stops41h 16m

$742

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sat 8/29

6:00 am-3:29 pm

2 stops9h 29m

Idaho Falls Fanning Field

Wed 9/2

4:10 pm-10:23 pm

1 stop6h 13m

$869

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap South Dakota to Idaho Falls flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from South Dakota to Idaho Falls

Fastest flight time

4h 53m

Direct flights

None
The fastest flight from South Dakota to Idaho Falls takes 4h 53m
There are no direct flights from South Dakota to Idaho Falls. There are no popular flight routes from South Dakota to Idaho Falls.
Search flight deals

  • When did momondo last update prices for flights from South Dakota to Idaho Falls Fanning Field Airport?

    Prices for flights from South Dakota to Idaho Falls Fanning Field Airport are updated daily.

  • How many operators does momondo search for flights from South Dakota to Idaho Falls Fanning Field Airport?

  • How old do you have to be to fly from South Dakota to Idaho Falls Fanning Field Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from South Dakota to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The necessary travel and health documents for your Idaho Falls Fanning Field Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from South Dakota to Idaho Falls

Compare and see reviews for airlines that fly from South Dakota to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $152Free CancellationRating
7.4
9,525 reviews
Search United Airlines flights

  • How do I get Price Alerts for flights from South Dakota to Idaho Falls?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to South Dakota from Idaho Falls. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from South Dakota to Idaho Falls with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

Why use momondo?

Why should I use momondo to find a flight deal from South Dakota to Idaho Falls?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from South Dakota to Idaho Falls for you.

Can I find flights from South Dakota to Idaho Falls with flexible booking policies on momondo?

Flights from South Dakota to Idaho Falls with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from South Dakota to Idaho Falls?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Idaho Falls from South Dakota.

I’m not ready to book a flight from South Dakota to Idaho Falls right now. Can momondo alert me if prices change?

Price alerts on flights to Idaho Falls from South Dakota are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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